EP1182997B1 - Vorrichtung für eine medizinische behandlung des auges mit laserstrahlung - Google Patents
Vorrichtung für eine medizinische behandlung des auges mit laserstrahlung Download PDFInfo
- Publication number
- EP1182997B1 EP1182997B1 EP00940327A EP00940327A EP1182997B1 EP 1182997 B1 EP1182997 B1 EP 1182997B1 EP 00940327 A EP00940327 A EP 00940327A EP 00940327 A EP00940327 A EP 00940327A EP 1182997 B1 EP1182997 B1 EP 1182997B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- radiation
- eye
- illumination
- angle
- laser
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000011282 treatment Methods 0.000 title claims abstract description 19
- 238000005286 illumination Methods 0.000 title abstract description 21
- 230000005855 radiation Effects 0.000 claims description 71
- 230000003287 optical effect Effects 0.000 claims description 7
- 230000001154 acute effect Effects 0.000 claims description 5
- 230000004424 eye movement Effects 0.000 abstract description 3
- 239000007787 solid Substances 0.000 abstract 1
- 210000004087 cornea Anatomy 0.000 description 14
- 238000000034 method Methods 0.000 description 8
- 210000001747 pupil Anatomy 0.000 description 7
- 238000002679 ablation Methods 0.000 description 6
- 238000013532 laser treatment Methods 0.000 description 3
- 230000005484 gravity Effects 0.000 description 2
- 229910052736 halogen Inorganic materials 0.000 description 2
- 150000002367 halogens Chemical class 0.000 description 2
- 238000001356 surgical procedure Methods 0.000 description 2
- 244000261422 Lysimachia clethroides Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 210000004045 bowman membrane Anatomy 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000005670 electromagnetic radiation Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 210000000981 epithelium Anatomy 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 210000003128 head Anatomy 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000847 optical profilometry Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 208000014733 refractive error Diseases 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 229910052724 xenon Inorganic materials 0.000 description 1
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F9/00—Methods or devices for treatment of the eyes; Devices for putting-in contact lenses; Devices to correct squinting; Apparatus to guide the blind; Protective devices for the eyes, carried on the body or in the hand
- A61F9/007—Methods or devices for eye surgery
- A61F9/008—Methods or devices for eye surgery using laser
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F9/00—Methods or devices for treatment of the eyes; Devices for putting-in contact lenses; Devices to correct squinting; Apparatus to guide the blind; Protective devices for the eyes, carried on the body or in the hand
- A61F9/007—Methods or devices for eye surgery
- A61F9/008—Methods or devices for eye surgery using laser
- A61F9/00802—Methods or devices for eye surgery using laser for photoablation
- A61F9/00804—Refractive treatments
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
- A61B90/30—Devices for illuminating a surgical field, the devices having an interrelation with other surgical devices or with a surgical procedure
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F9/00—Methods or devices for treatment of the eyes; Devices for putting-in contact lenses; Devices to correct squinting; Apparatus to guide the blind; Protective devices for the eyes, carried on the body or in the hand
- A61F9/007—Methods or devices for eye surgery
- A61F9/008—Methods or devices for eye surgery using laser
- A61F2009/00861—Methods or devices for eye surgery using laser adapted for treatment at a particular location
- A61F2009/00872—Cornea
Definitions
- the invention relates to a device for a medical Treatment and / or operation of the eye with laser radiation using auxiliary radiation to determine the eye position.
- such a device for the so-called PRK Photo refractive keratectomy, photo refractive keratectomy
- d. H a method for Correction of the refractive error of the human eye, in which especially the cornea is reshaped.
- the device according to the invention for the so-called LASIK procedure in which initially a small rag (cover) cut from epithelium, bowman membrane and stroma and unfolded and then the PRK is carried out in the current bed becomes.
- PRK In PRK (especially LASIK) is material of the cornea ablated.
- the ablation is a function of the cornea incident energy density (energy per unit area) of the Laser beam.
- Beam shaping and beam guidance There are different techniques for the Beam shaping and beam guidance known, such as the so-called slit scanning, in which the Radiation by means of a moving slit on the processed Area, the so-called spot-scanning (spot-scanning), where a radiation spot with very low Dimensions over the area to be removed, and the so-called full ablation the radiation over a large area over the entire ablate Area is irradiated and where the energy density itself changes over the beam profile to the desired removal of the To reach the cornea.
- spot-scanning spot-scanning
- full ablation the radiation over a large area over the entire ablate Area is irradiated
- the energy density itself changes over the beam profile to the desired removal of the To reach the cornea.
- the prior art knows for the each called beam guides suitable algorithms
- spot scanning uses one on a relatively small diameter (0.1-2mm) focused laser beam, which by means of a Beam guiding device on different parts of the cornea directed and by a so-called scanner is successively moved so that ultimately the desired removal is reached from the cornea.
- the PRK are so-called galvanometric scanner (scanner) usable (See article G. F. Marshall in LASER FOCUS WORLD, June 1994, p. 57).
- the present invention particularly relates the so-called spot scanning in the LASIK process.
- a special problem with the PRK and LASIK is the relative Positioning of laser beam and eye. From medical For reasons, a mechanical fixation of the eye is not satisfactory.
- the prior art therefore knows a so-called optical fixation, in which with the material-processing Laser beam usually coaxial with a so-called fixing beam is used. The patient is stopped, exactly to look at the point defined by the fixation beam, so that the eye always the same during the entire operation Takes position. However, this does not succeed, anyway not with sufficient reliability, so that it to movements of the eye comes, which the entire ablation process can affect massively.
- eye-tracker these are Facilities that detect movements of the eye then the laser beam used for the ablation according to Control eye movements (to track).
- eye-tracker are Facilities that detect movements of the eye then the laser beam used for the ablation according to Control eye movements (to track).
- German Utility Model 298 09 759.1 There is for the auxiliary radiation, which of the determination the eye position for the "eye-tracking" serves, white Used light emitted by light-emitting diodes.
- DE 197 02 335 C1 describes a laser system for treatment the cornea with facilities to the laser treatment beam then when the eye is relative to one Reference axis moves, track.
- an image pickup device CCD camera
- auxiliary radiation used to the eye for the production of image captures to illuminate.
- a controller controls one Beam guiding device, z.
- For the frame rate at which the camera takes pictures takes on a certain dependence in relation to the Pulse repetition frequency of the laser radiation proposed.
- This Prior art is assumed and used as known here. In summary, he teaches in quick succession pictures of the Eye with a camera to record and process to movements to determine the eye.
- the ablation laser beam can be by means of suitable beam guidance devices (e.g., the aforementioned galvanometric scanner).
- a device according to the preamble of claim 1 is apparent from WO 99/20174.
- the real one Treatment laser beam which causes the ablation on the other hand the so-called auxiliary radiation, that is the radiation, which serves the illumination of the eye to z. B. with the Camera to determine the eye position and the third if necessary the so-called Fixierstrahl, which is stationary and the Patients should always be the same with the eye To look at the point (the latter is just a special option).
- halogen lights are used to illuminate the eye used by means of a fiber bundle in the Observation beam to be brought.
- State of the art is also the use of a ring light or the coaxial Coupling of the illumination radiation via a surgical microscope.
- flexible goosenecks for positioning the illumination light for illuminating the foreground of the eye, especially the cornea so that the doctor Optionally, the light for optimal observation of the Can adjust the eye as a whole.
- the in the art used halogen bulbs and xenon lamps are both in terms of the burden on the patient as well as in terms of the lighting quality for the treating physician can be improved.
- the auxiliary radiation in terms of their angle of incidence, wavelengths, etc. extremely important for achieving good results in the investigation the eye position.
- a device for the medical treatment of the eye of the type mentioned above in such a way that when determining the eye position achieves reliable results especially if the system is different Eyes (patients) and under different conditions is used.
- the invention is based on the finding that especially good results with respect to the eye position then achieved when using at least two sources of infrared radiation whose radiations are each at an angle from 30 to 70 °, preferably between 40 and 60 °, for optical Axis of the treatment laser radiation run.
- the optical Although the axis of the treatment laser radiation varies slightly when scanning, but can be considered as essentially fixed in space be considered; In particular, it can with the optical Axis of the dormant eye are essentially equated.
- the Auxiliary radiation provided at least three radiation sources, their radiations each at an angle of 30 to 70 °, preferably between 40 and 60 °, to the optical axis of the treatment radiation run.
- special preferably used infrared radiation sources preferably in Form of light-emitting diodes (LED), in particular with Wavelengths of about 810 nm.
- the radiation sources mentioned can each themselves from a Variety of LED be composed.
- a "radiation source” in the sense of this application is then a system several LEDs that are physically connected and their composite radiation from substantially the same Direction is directed to the eye.
- the radiation sources forming a triangle under which the eye to be treated can be positioned is.
- the said triangle can be in a horizontal plane lying or in one opposite the horizontal slightly inclined plane.
- the terms "horizontal” and “vertical” are used here in the usual sense, d. H. in the assumption, that the lying patient is aligned horizontally.
- electromagnetic radiation for local purposes as regardless of the gravity can be considered and In principle, the patient can be aligned as desired can, serve the terms "horizontal” and “vertical” here for the sake of general explanation only, assuming that the patient lies in the usual way and his head with the eye is aligned upward.
- the invention When using at least three radiation sources for the Illumination auxiliary radiation is according to a preferred embodiment the invention provided that the radiation at least two radiation sources at an acute angle relative to each other on the eye to be treated. This acute angle can z. B. between 25 and 70 °, preferably between 35 and 65 °, lie. In a preferred embodiment this variant of the invention is provided that the radiation a third radiation source in projection on one Horizontal plane approximately in the direction of the bisector of the said acute angle between the other two beams runs.
- FIG. 1 shows an eye 10 to be treated with a lens 12, an iris 14 and a cornea 16.
- the one with laser radiation (For example, excimer laser radiation having a wavelength of 193 nm) to be treated area 16a of the cornea 16 is in Figure 1 hatched.
- FIG. 1 is a vertical section through the eye 10.
- FIG. 2 shows a plan view of the eye 10 to be treated and the Arrangement of three radiation sources 20, 22, 24 for the Auxiliary radiation for determining the eye position.
- the camera system and also the actual treatment laser beam are not shown separately in the figures. They correspond the above-mentioned prior art. The following Description is therefore limited to the auxiliary radiation and their arrangement with respect to the eye.
- Each individual radiation source 20, 22, 24 consists of a Variety of Individual Light Emitting Diodes (LED) 26.
- the LEDs emit radiation in the infrared range of 810 nm Wavelength.
- For the recording camera (not shown) is a Daylight filter used. It can, for. B. a black and white camera be used. To achieve good results in terms of eye position, it is important to have a high Contrast between pupil (dark) and iris (bright) to reach. This is done by the auxiliary radiation described here Radiation sources 20, 22, 24.
- each radiation source 20, 22, 24 of twelve individual IR LEDs which each connected to an array of 3x4 LED.
- FIG. 1 shows one of the radiation sources (radiation source 24), that the individual LED 26 can be seen.
- the two outer ones LED rows of four LEDs each have e.g. a beam angle of ⁇ 8 °, while the inner row of four LED has a beam angle of ⁇ 20 °.
- the mentioned radiation angle corresponds about the Divergenzwinkel the Abstrahl.eule.
- the named Choice of beam angle allows for mixing the radiation within an array, which is beneficial for a shadow-free and homogeneous illumination has proved.
- a different choice of beam angles within a radiation source is preferred used in all three radiation sources 20, 22, 24.
- the radiations generated from each LED add each together to a combined beam 30, 32, 34.
- the resulting rays are in their relative Positioning and positioning in relation to the to be treated eye 10 Figures 1 and 2 can be seen.
- the actual treatment laser beam (not shown separately) runs perpendicular to the plane of the drawing; its axis is designated 18.
- the illumination beams (auxiliary beams) 30, 32, 34 extend slightly inclined to the horizontal plane and at an angle ⁇ to the axis 18 of the laser treatment beam.
- FIG. 1 shows the angles between the illumination beams 30, 32 and the treatment laser beam 18, namely the angles ⁇ 1 and ⁇ 2 .
- the angles ⁇ 1 , ⁇ 2 are in a range of 40 to 60 °.
- the distance D between the outlet opening of the illumination beams 30, 32, 34 and the apex plane of the cornea to be treated is about 20 to 150 mm, preferably about 30 to 100 mm.
- Figures 1 and 2 also leave a preferred arrangement of Detecting radiation sources relative to each other.
- Two radiation sources 20, 22 are arranged so that those of them emitted illumination beams 30, 32 projected onto a Horizontal plane form an angle ⁇ .
- the angle ⁇ is pointed, preferably in the range of 25 to 70 °, more preferably in the range of 35 to 65 °.
- the third radiation source 24 is then arranged so that its radiation 34 is approximately in the range the bisector 36 of the angle ⁇ between the two other beams passes. This causes an optimal Illumination and best results in terms of identification the eye position when evaluating the camera images.
Landscapes
- Health & Medical Sciences (AREA)
- Ophthalmology & Optometry (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Optics & Photonics (AREA)
- Surgery (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Physics & Mathematics (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Laser Surgery Devices (AREA)
- Eye Examination Apparatus (AREA)
Abstract
Description
- Figur 1
- schematisch einen vertikalen Schnitt durch ein zu behandelndes Auge und die Anordnung von mehreren Strahlungsquellen für die Hilfsstrahlung, und
- Figur 2
- eine Draufsicht auf die Vorrichtung mit drei Strahlungsquellen für die Hilfsstrahlung.
Claims (2)
- Vorrichtung für eine medizinische Behandlung und/oder Operation des Auges mit Laserstrahlung unter Verwendung von Hilfsstrahlung zur Ermittlung der Augenstellung, wobei für die Hilfsstrahlung Infrarotstrahlungsquellen (20, 22, 24) vorgesehen sind, deren Strahlungen (30, 32, 34) unter einem Winkel α von 30 bis 70° zur optischen Achse (18) der Behandlungs- und/oder Operationsstrahlung verlaufen, dadurch gekennzeichnet, dass genau 3 Infrarotstrahlungsquellen (20, 22, 24) vorgesehen sind, die ein Dreieck derart bilden, dass die Strahlungen (30, 32) zweier Strahlungsquellen (20, 22) in einem spitzen Winkel (β) relativ zueinander auf das zu behandelnde Auge zulaufen und die Strahlung (34) der dritten Strahlungsquelle (24) in Projektion auf eine Horizontalebene in Richtung der Winkelhalbierenden (36) des spitzen Winkels (β) verläuft.
- Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass der Winkel (α) zwischen den Strahlungen (30, 32, 34) und der optischen Achse (18) zwischen 40° und 60° liegt.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19926476 | 1999-06-10 | ||
DE19926476A DE19926476A1 (de) | 1999-06-10 | 1999-06-10 | Vorrichtung für eine medizinische Behandlung des Auges mit Laserstrahlung |
PCT/EP2000/005197 WO2000076435A1 (de) | 1999-06-10 | 2000-06-06 | Vorrichtung für eine medizinische behandlung des auges mit laserstrahlung |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1182997A1 EP1182997A1 (de) | 2002-03-06 |
EP1182997B1 true EP1182997B1 (de) | 2004-11-24 |
Family
ID=7910796
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00940327A Expired - Lifetime EP1182997B1 (de) | 1999-06-10 | 2000-06-06 | Vorrichtung für eine medizinische behandlung des auges mit laserstrahlung |
Country Status (5)
Country | Link |
---|---|
US (1) | US6755817B1 (de) |
EP (1) | EP1182997B1 (de) |
DE (2) | DE19926476A1 (de) |
ES (1) | ES2231210T3 (de) |
WO (1) | WO2000076435A1 (de) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5980513A (en) | 1994-04-25 | 1999-11-09 | Autonomous Technologies Corp. | Laser beam delivery and eye tracking system |
WO2001078585A2 (en) | 2000-04-19 | 2001-10-25 | Alcon Universal Ltd. | Wavefront sensor for objective measurement of an optical system and associated methods |
DE10123027B4 (de) | 2001-05-11 | 2005-07-21 | Evotec Oai Ag | Vorrichtung zur Untersuchung chemischer und/oder biologischer Proben |
DE10132378A1 (de) | 2001-07-06 | 2003-04-24 | Zeiss Carl Meditec Ag | Verfahren und Vorrichtung zur Verfolgung von Augenbewegungen |
DE102004018628A1 (de) | 2004-04-16 | 2005-11-03 | Carl Zeiss Meditec Ag | Vorrichtung und Verfahren zur Erkennung von Augenbewegungen |
DE102004021680A1 (de) * | 2004-04-30 | 2005-11-24 | Carl Zeiss Meditec Ag | Anordnung zum Entfernen von Abprodukten bei der Ablation von biologischem Gewebe |
DE102004025999A1 (de) * | 2004-05-27 | 2005-12-15 | Quintis Gmbh | Vorrichtung zur berührungslosen, dreidimensionalen Erfassung der Augenposition insbesondere während einer Laser-basierten Augenoperation |
CN102387764B (zh) * | 2009-04-01 | 2013-09-25 | 威孚莱有限公司 | 用于眼睛的激光照射治疗的装置 |
US9265458B2 (en) | 2012-12-04 | 2016-02-23 | Sync-Think, Inc. | Application of smooth pursuit cognitive testing paradigms to clinical drug development |
US9380976B2 (en) | 2013-03-11 | 2016-07-05 | Sync-Think, Inc. | Optical neuroinformatics |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4761071A (en) * | 1984-11-06 | 1988-08-02 | Baron William S | Apparatus and method for determining corneal and scleral topography |
US4848340A (en) | 1988-02-10 | 1989-07-18 | Intelligent Surgical Lasers | Eyetracker and method of use |
IL89874A0 (en) * | 1989-04-06 | 1989-12-15 | Nissim Nejat Danon | Apparatus for computerized laser surgery |
US5520679A (en) | 1992-12-03 | 1996-05-28 | Lasersight, Inc. | Ophthalmic surgery method using non-contact scanning laser |
US5406074A (en) * | 1994-02-07 | 1995-04-11 | Grisell; Ronald D. | Noninvasive, remote eye position and orientation measurement system using light beams normal to the surface of the eye |
US5442412A (en) * | 1994-04-25 | 1995-08-15 | Autonomous Technologies Corp. | Patient responsive eye fixation target method and system |
JP3490520B2 (ja) * | 1994-12-12 | 2004-01-26 | 株式会社ニデック | 眼科装置 |
JP3655022B2 (ja) | 1995-09-29 | 2005-06-02 | 株式会社ニデック | 眼科手術装置 |
DE19702335C1 (de) | 1997-01-23 | 1998-08-27 | Wavelight Laser Technologie Gm | Vorrichtung für die Materialbearbeitung mit einem gepulsten Laser |
US6302876B1 (en) * | 1997-05-27 | 2001-10-16 | Visx Corporation | Systems and methods for imaging corneal profiles |
US6007202A (en) * | 1997-10-23 | 1999-12-28 | Lasersight Technologies, Inc. | Eye illumination system and method |
DE29809759U1 (de) | 1998-05-29 | 1998-08-13 | WaveLight Laser Technologie GmbH, 91058 Erlangen | Vorrichtung für eine medizinische Behandlung mit einer Lichtquelle |
US6578962B1 (en) * | 2001-04-27 | 2003-06-17 | International Business Machines Corporation | Calibration-free eye gaze tracking |
-
1999
- 1999-06-10 DE DE19926476A patent/DE19926476A1/de not_active Withdrawn
-
2000
- 2000-06-06 DE DE50008764T patent/DE50008764D1/de not_active Expired - Lifetime
- 2000-06-06 WO PCT/EP2000/005197 patent/WO2000076435A1/de active IP Right Grant
- 2000-06-06 EP EP00940327A patent/EP1182997B1/de not_active Expired - Lifetime
- 2000-06-06 US US10/009,925 patent/US6755817B1/en not_active Expired - Lifetime
- 2000-06-06 ES ES00940327T patent/ES2231210T3/es not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE19926476A1 (de) | 2000-12-14 |
DE50008764D1 (de) | 2004-12-30 |
ES2231210T3 (es) | 2005-05-16 |
WO2000076435A1 (de) | 2000-12-21 |
US6755817B1 (en) | 2004-06-29 |
EP1182997A1 (de) | 2002-03-06 |
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